2 Skelton for retropc emulator
4 Author : Takeda.Toshiya
17 #define SIG_I8251_RECV 0
18 #define SIG_I8251_BREAK 1
19 #define SIG_I8251_DSR 2
20 #define SIG_I8251_CLEAR 3
21 #define SIG_I8251_LOOPBACK 4
24 class DLL_PREFIX I8251 : public DEVICE
28 uint8_t recv, status, mode;
29 bool txen, rxen, loopback;
32 outputs_t outputs_out;
33 outputs_t outputs_rxrdy;
34 outputs_t outputs_syndet;
35 outputs_t outputs_txrdy;
36 outputs_t outputs_txe;
37 outputs_t outputs_dtr;
38 outputs_t outputs_brk;
39 outputs_t outputs_rts;
47 I8251(VM_TEMPLATE* parent_vm, EMU_TEMPLATE* parent_emu) : DEVICE(parent_vm, parent_emu)
49 initialize_output_signals(&outputs_out);
50 initialize_output_signals(&outputs_rxrdy);
51 initialize_output_signals(&outputs_syndet);
52 initialize_output_signals(&outputs_txrdy);
53 initialize_output_signals(&outputs_txe);
54 initialize_output_signals(&outputs_dtr);
55 initialize_output_signals(&outputs_brk);
56 initialize_output_signals(&outputs_rts);
57 set_device_name(_T("i8251 SIO"));
65 void __FASTCALL write_io8(uint32_t addr, uint32_t data);
66 uint32_t __FASTCALL read_io8(uint32_t addr);
67 void __FASTCALL write_signal(int id, uint32_t data, uint32_t mask);
68 void __FASTCALL event_callback(int event_id, int err);
69 bool process_state(FILEIO* state_fio, bool loading);
72 void set_context_out(DEVICE* device, int id)
74 register_output_signal(&outputs_out, device, id, 0xff);
76 void set_context_rxrdy(DEVICE* device, int id, uint32_t mask)
78 register_output_signal(&outputs_rxrdy, device, id, mask);
80 void set_context_syndet(DEVICE* device, int id, uint32_t mask)
82 register_output_signal(&outputs_syndet, device, id, mask);
84 void set_context_txrdy(DEVICE* device, int id, uint32_t mask)
86 register_output_signal(&outputs_txrdy, device, id, mask);
88 void set_context_txempty(DEVICE* device, int id, uint32_t mask)
90 register_output_signal(&outputs_txe, device, id, mask);
92 void set_context_dtr(DEVICE* device, int id, uint32_t mask)
94 register_output_signal(&outputs_dtr, device, id, mask);
96 void set_context_brk(DEVICE* device, int id, uint32_t mask)
98 register_output_signal(&outputs_brk, device, id, mask);
100 void set_context_rts(DEVICE* device, int id, uint32_t mask)
102 register_output_signal(&outputs_rts, device, id, mask);